H.323 Video Conferencing Client For Mac Os X
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This list of SIP software documents notable software applications which use Session Initiation Protocol (SIP) as a voice over IP (VoIP) protocol.

1Servers
2Clients
3Mobile clients

Servers[edit]

Free and open-source license[edit]

Chapter 1: Introduction About this guide This administration guide provides information on server requirements, client requirements, and procedures to configure Avaya Aura ® and the Avaya one-X ® Communicator for Mac OS. Mac OS X Support Changes RealPresence Desktop 3.3 adds support for Yosemite 10.10. • Hide the H.323 and SIP technical terms from the GUI. 1 Download the installation file from the Polycom Support site. 2 Follow the Installer Wizard instructions.

Cipango SipServlets 1.1 application server
Issabel, fork of Elastix
Kamailio, formerly OpenSER^[1]
Mobicents Platform (JSLEE[2] 1.0 compliant and SIP Servlets 1.1 compliant application server)
OpenSIPS, fork of OpenSER
SIP Express Router (SER)
YXA, based on Erlang

Proprietary license[edit]

3Com VCX IP telephony module: back-to-back user agent SIP PBX
3CX Phone System, for Windows, Debian 8 GNU/Linux
Aastra 5000, 800, MX-ONE
Alcatel-Lucent 5060 IP Call server
Aricent SIP UA stack, B2BUA, proxy, VoLTE/RCS Client
Avaya Application Server 5300 (AS5300), JITC certified ASSIP VoIP
Bicom Systems IP PBX for telecoms
Brekeke SIP Server, SIP proxy, SIP registrar, SIP NAT, TCP/UDP
Brekeke PBX, SIP PBX for service providers and enterprises
Cisco SIP Proxy Server, Cisco unified border element (CUBE), Cisco Unified Communication Manager (CUCM)
CommuniGate Pro, virtualized PBX for IP Centrex hosting, voicemail services, self-care, ..
Comverse Technology softswitch, media applications, SIP registrars
Creacode SIP Application Server Real-time SIP call controller and IVR product for carrier-class VoIP networks
Dialogic Corporation Powermedia Media Servers, audio and video SIP IVR, media and conferencing servers for Enterprise and Carriers.
Dialexia VoIP Softswitches, IP PBX for medium and enterprise organizations, billing servers.
IBMWebSphere Application Server - Converged HTTP and SIP container JEE Application Server
Interactive Intelligence Windows-based IP PBX for small, medium and enterprise organizations
Kerio Operator, IP PBX for small and medium enterprises
MERA Systems VoIP softswitches with sbc, H.323/SIP proxy
Microsoft Lync Server 2010 & 2013
Mitel Communications Director
NEC SV7000 back-to-back user agent SIP PBX
NEC UNIVERGE 3C Unified Communications and Collaboration software
Nokia Siemens Networks hiQ8000
Nortel SCS500
Nortel SIP Multimedia Communication Server 5200
Objectworld UC Server
Oracle Communications Converged Application Server (OCCAS)
Oracle WebLogic SIP Server
REVE Systems Mobile VoIP, Class 4/5 Softswitch with integrated billing and Bandwidth Optimization products
Spirent SIP Server Platform
ShoreTel IP phone systems with unified communications and contact center built in
Snom One free/blue/yellow (Snom acquired and renamed pbxnsip) (SIP)
Speedflow Communications VoIP class 4/5 softswitches with integrated billing, transcoding, SIP-H.323 converter.
Sterlite Technologies Neox IPPBX, IMS - ISC, Dial Center - OmniChannel Call Center, IVR products
Sun Microsystems Sun GlassFish Communication Server
Tadiran Telecom Coral Ipx family and Aeonix softswitch
Tandberg Video Communication Server - SIP application server, media server and H.323 gateway
TrueConf Server - video conferencing server software, SIP gateway
Unify OpenScape Voice, OpenScape 8000 SIP softswitch, mediaserver, .. (SIP)
Voice Elements Inventive Labs' .NET Voice Development software and SIP stack platform.
Wildix WGW series Unified communication platform up to 5000 users on a single server. Up to 65535 users on WMS network
Zultys MX250/MX30 IP PBXs for SMB and enterprise

Clients[edit]

Free and open-source license[edit]

Blink, OSX, Linux, and Windows
Ekiga, formerly named GnomeMeeting, GPL
Empathy, using GTK+ libraries and Telepathy framework, GPL
Jami, with GTK+/Qt GUI, also supports IAX2 protocol, for Linux, OS X, Windows GPL
Jitsi, a Java VoIP and Instant Messaging client with ZRTP encryption, for FreeBSD, Linux, OS X, Windows; LGPL
KPhone, using Qt libraries, GPL, for Linux
Linphone, with a core/UI separation, the GUI is using GTK+ libraries, for Linux, OS X, Windows, and mobile phones (Android, iPhone, Windows Phone, BlackBerry)
MicroSIP, lightweight softphone, using PJSIP stack, for Windows
QuteCom, formerly named OpenWengo, using Qt libraries, GPL, for Windows, Mac, and RPM- DEB-based Linux^[2]
Telephone, OS X softphone written in Cocoa/Swift
Twinkle, using Qt libraries, GPL, for Linux
Yate client, using Qt libraries,^[3] GPL^[4]

Proprietary license[edit]

Blink, for Mac
CounterPath Corporation Bria desktop and mobile carrier-class, enterprise-grade VoIP applications
Librestream's 2500 Camera, 5000HD camera, Onsight Cube (wearable/modular camera), Onsight Connect (Windows, iOS, Android).^[5]
LifeSize Desktop, for Windows
Phoner and PhonerLite, for Windows, Voice: G.711, G.722, G.726, GSM, iLBC, Speex, Opus; security: TLS, SRTP, ZRTP
Polycom PVX, for Windows. Voice: G.711, G.722, G.722.1, G.728, G.729A, Siren Codec; Video: H.261, H.263, H.264; Data: T.120, People+ Content, H.239, H.323 Annex Q far-end camera control
Windows Messenger versions 4 and 5 (not to be confused with Windows Live Messenger or MSN Messenger which do not support SIP)

Discontinued[edit]

eyeBeam, discontinued in 2018
Gizmo5, formerly PhoneGaim, discontinued in 2011

Mobile clients[edit]

Free and open-source license[edit]

CSipSimple for Android, GPL v3
Jami for Android, GPL v3
Linphone for Android, BlackBerry, iPhone, Windows phone; GPL v2
Sipdroid for Android, GPL v3

Proprietary license[edit]

Acrobits for iOS and Android
CounterPath Corporation Bria Mobile for iOS and Android

Session border controllers[edit]

Acme Packet Session Director
Audiocodes Mediant
Genband Quantix SBC
Ingate Systems Ingate SIParators
Metaswitch Perimeta

Enabled firewalls[edit]

Check Point VPN-1 firewalls, include complete SIP support for multiple vendors
The firewall feature in Cisco IOS includes complete SIP support
Cisco PIX/ASA firewalls include complete SIP support
D-Link Firewall DFL-210/260/800/860/1600/2500 supports SIP (SIP-ALG) with firmware 2.20.01.05 and above
Fortinet, all FortiGates running v280/v300 builds
Intertex SIP transparent routers, firewalls and ADSL modems, for broadband deployments and SOHO market
Juniper Networks Netscreen and SRX firewalls include complete SIP Application Layer Gateway support
LinuxNetfilter's SIP conntrack helper fully understands SIP and can classify (for QOS) and NAT all related traffic
Netopia Netopia supports ALG
PF, built-in OpenBSD firewall PF can handle the NAT through the 'static-port' directive and the bandwidth control through the built-in queuing system of SIP connections
pfSense, a firewall/router distribution based on FreeBSD and PF; has QoS that properly tags VoIP traffic and a SIP proxy package that is available for NATed endpoints. Its functionality can be expanded with packa

H.323 Client For Mac Os X